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FosPower Y Adapter [8 inch] 1 RCA (Male) to 2 RCA (Female) Stereo Audio Y Adapter Subwoofer Cable [24k Gold Plated] 1 Male to 2 Female Y Splitter Connectors Extension Cord - Walmart.com
Pure Copper 2 Splitter HIFI Single RCA to Dual RCA Subwoofer Audio Cable Cord | eBay
My Cable Mart - 6 inch 1 Wire RCA Premium Digital Audio SubWoofer/Video Cable IN WALL
Amazon.com: KabelDirekt – 6ft Short – RCA/Phono subwoofer Lead Cable, 1 to 1 RCA/Phono, Audio/Digital/Video (Coax Cable, RCA/Phono Male/Male Plugs, for amps/Hi-Fis, Audio Signals/Composite Video, 75 ohm, Black) : Electronics
Amazon.com: Poyiccot RCA Splitter Male to Male Cable, RCA Y Splitter 1 RCA Male to 2 RCA Male Stereo Audio Subwoofer Cable, 2RCA to 1RCA Bi-Directional RCA Y Adapter Cable - 25cm/10inch :
Straight Wire Encore II Subwoofer Cable Single to Dual RCA 2 Meter - Walmart.com